Shock waves (also known as shocks) are caused by objects moving at supersonic velocities. Because the surrounding fluid can propagate disturbances only at the local speed of sound, the moving object piles up the disturbances it is causing into a V-shaped wake attached to the object. The supersonic boom of an aircraft is the passage of this shock wave past the eardrum.
Related entries shock front
Related category AERODYNAMICS AND AERONAUTICS
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